Yuuta struggled every day with an overwhelming urge to have sex with his mother, Kozue. It all began with a small incident, but gradually Yuuta started to realize how beautiful a woman his mother truly was, and his desire grew stronger each day. One day, unable to hold back any longer, Yuuta confessed his feelings to her. To his shock, Kozue calmly replied, "Not at home—but just once, somewhere else, I'll agree." Her words struck deep within him.